PMP7668

Wide Input 2W Bias Power Supply Reference Design

PMP7668

Design files

Overview

This reference design is a 2W bias power supply for applications requiring operation over a wide input range (110 - 500VAC). The small form factor (69mm x 26mm) and high efficiency of this design make it ideal for e-metering applications. Information provided in this design will reduce time to market by providing important test data such as efficiency, output ripple, startup, and switching stress. Additionally, TI has conducted emissions testing on this design to ensure that it exceeds the EN55022 Class B limits.

Features
  • Supports a wide input voltage range: 110VAC - 500VAC
  • Targeted for small form factor applications (69mm x 26mm)
  • Greater than 65% efficiency over tested operating range
  • Achieved voltage regulation of +/-1% at full load
  • Test results demonstrate this design's capability to pass EN55022 Class B EMC standard
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU251.PDF (1432 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDC313.ZIP (335 K)

Detailed schematic diagram for design layout and components

TIDR448.PDF (24 K)

Detailed schematic diagram for design layout and components

TIDR449.PDF (79 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDC312.ZIP (168 K)

Design file that contains information on physical board layer of design PCB

Products

Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

UCC28722Low-Cost CVCC Flyback controller With primary-side regulation for bipolar Power Device

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TLV704150-mA 24-V ultra-low-IQ low-dropout (LDO) voltage regulator

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP7668 Test Results Mar. 10, 2014
Application note AC-DC Non-Isolated SMPS for Single-Phase Smart Meters Based on UCC28722 (Rev. A) Nov. 02, 2017

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